Magnetic Resonance Imaging Study of Cardiac Atrioventricular Line and Ventricular Systolic Function in Population of Kunming

Objective To summarize the normal reference values of atrioventricular diameter and cardiac function parameters in Kunming local healthy population by magnetic resonance imaging (MRI) . Methods The 1.5T magnetic resonance scanner was used routinely to link the vector gating and according to a rapid steady-state balance precession sequence was applied to perform a cardiac cine scan in 97 Kunming local healthy volunteers. The acquisition of cardiac cine images included the left ventricular horizontal long axis (HLA) , the left ventricular vertical long axis (VLA) , the left ventricular short axis (SA) , the left and right atrial axial.Following the scan, AW Report CARD 4.4 heart specific analysis software was used to measure the linear length of image and measure the volume of the image. The measured values were statistically processed to obtain the mean parameters of the heart, atrioventricular and cardiac functions. Non-Paired T tests were performed for male and female corresponding parameters. Meanwhile the relationship between these corresponding parameters and UCG was researched. Results All volunteers received high-quality heart tomographic images and the sampling points were legible. Multiple parameters of cardiac atrioventricular line and cardiac function were obtained, according to heart tomographic images. All of the above cardiac atrioventricular values were positively correlated with UCG measurements. No significant association was found in left and right ventricular ejection fraction (P>0.05) , cardiac index (P >0.05) and sex (P >0.05) . However, all the other indexes were statistically significant (P<0.05) . The results also showed that the thickness of the left ventricular anterior chamber, the left ventricular posterior wall thickness, the left ventricular ejection fraction, and the right ventricular ejection fraction were slightly higher than those in the plain region (P <0.05) .Conclusion Heart magnetic resonance scanning can obtain reliable atrioventricular line and ventricular systolic function in Kunming local healthy population.